Brick-press



2 Sheets-Sheet 1. I .l- BOYNTON.

Brick Press.

Patented August 5, 1856.

2 SheetsSheet 2.. J. BOYNTON.

Brick Press.

' Patented August 5, 1856;

JOHN BOYNTON, OF EAST HARTFORD, CONNECTICUT.

BRICK-PRESS.

Specification of Letters Patent No. 15,471, dated August 5, 1856.

' To all whom it may concern:

Be it known that I, JOHN BoYN'roN,of East Hartford, in the county of Hartford and State of Connecticut, have invented an Improved Brick-Press or Automatic Machine for Molding and Pressing Bricks; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which Figure 1, is a top View of the. said machine; Fig. 2, a side elevation of it; Fig. 3, a vertical, central, and longitudinal section of it; Fig. i, a top view of its vertical molding plate; Fig. 5, a transverse and vertical section of the machine, taken in line of the axis of its crank shaft. Fig. 6, is a rear elevation of the machine; Fig. 7 is a side view of its compressor.

In the drawings A, exhibits the framework of the machine, it being constructed as therein represented, or in any proper manner for supporting its operative parts to be hereinafter described. At the lower part of said frame there is what I term the bed plate, B, it being a strong table or bed for sustaining the circular bed or mold ing plate, C, which is arranged upon it and made to revolve on a vertical spindle or journal, D, extending above the bed plate as shown in Figs. 3 and 5. The said molding plate is calculated to be thicker than the brick to be formed, and it is to be constructed so as to have four or any other suitable number of matrices, a, a, a, each matrix being of the form in horizontal section of the brick to be made in it. These matrices are placed at equal distances asunder and are arranged about the central or pivot hole, I), as shown in Fig. 4. Around said pivot hole and within the molding plate are four holes, 0, c, c, 0, with which a pitman E, extending from a rocker lever F is intended to operate in order to impart to the molding plate an intermittent rotary motion. The said pitman is provided with a tooth, d, formed as shown in Fig. 3, which shows the pitman and its rocker lever. In such figure, the front edge of the tooth is arranged so, as to stand square with the pitman while the rear edge of said tooth makes an obtuse angle therewith. I form the back of the tooth in such manner in order to enable the tooth to rise out of a hole, 0, when the bitman is drawn backward. The said rocker lever, F, turns on a horizontal rod or fulcrum, G, and has a connecting pitma-n H, jointed to it and to a long bell crank, 6, extending from a crank shaft, I, arranged as seen in the drawing. Immediately over the mold plate, C, and on one side of its center, as seen in Figs. 1 and 3, a hopper,

K, is arranged and within said ho[pper there is a filling plunger, L, which is arranged to work vertically and to press downward toward a matrix the clay which may be placed in the hopper, the same being for the purpose of insuring the filling of a matrix with clay during the passage of said matrix by and underneath the lower mouth of the hopper. The said filling plunger is jointed to a lever, M, which turns upon a fulcrum at the upper part of the vibrating arm N, that is supported by and turns on the rod, G.

A pitman, O, jointed to the bell crank shaft, 6, and to the lever M, serves when said crank is put in revolution and during,

each entire revolution of the crank to raise and depress the lever, M, and thereby elevate and force downward the filling plunger, L. Two gears P, Q, connect the crank shaft with a driving shaft, It, as seen in the drawings, such driving shaft receiving its motion from any suitable motor, Besides the pitmen applied to the bell crank, 0, as hereinbefore described, there are two other pitmen, S, T, which respectively are jointed to two plungers U, V, one of which I term the compresser and the other the discharger, they being arranged as shown in Figs. 3, and 5. They should be supported in vertical guides and so that as each matrix is brought in succession directly under each of said plungers, the said plunger may be forced downward into the matrix; the compressor serving to compress the clay in the matrix and thereby impart to it the form of a brick, which after being carried around directly underneath the discharger V, is forced out of the matrix by said discharger, and falls through an orifice or opening, f, made in the bed plate B, as seen in Fig. 6.

I would remark that each of the plungers, U, and V, ismade of a rectangular shape in cross section and so as to fit either of the matrices. Furthermore the compresser, U, has one or more tapering projections, 9 9, extended from its lower end in manner as shown in Fig. 7, each of said projections being made of a length to correspond with or about with the thickness of the brick which may be formed in the mold.

Each projection not only serves to perforate the brick or form it with a hole eX- tending through it, but in consequence of its tapering or conical form it forcesthe clay laterally before it is finally compressed and thus serves to insure a more perfect expansion of the clay into the mold. When bricks are so made they may be doweled together when laid on the mortar used in laying them by entering into their holes, will serve to strengthen the wall or more securely, maintain each brick in its place therein. As the brick is discharged'from the mold it may drop on an endless apron, arranged as seen at, X, and by it be removed or carried out of the way. I11 operating with my machine the rotary molding plate, C, will have an intermittent rotary movement imparted to it, whereby it will be made to stand still, during each upward and downward motion of either of the plungers. In consequence thereof, each of its matrices in succession will be charged wit-h clay, and afterward be moved around underneath the compresser and next subjected to its action, and subsequently be moved around underneath the discharger in order that the latter may pass into it and eXpel the clay in the form of a pressed brick.

Then the working parts of a brick press are arranged and made to operate in manner as described, we not only have a very simple machine, but one which will perform its functions to great advantage in comparison with many otherbrick presses in use. Such machine being calculated to manufacture bricks from either dry or moistened clay.

In my said machine, it will be perceived that the rotary molding plate and its matrices are arranged horizontally and directly on and over the bed, B, while the hopper K,

and the filling plunger are disposed vertically over the said plate and aside from the pivot or journal 6, thereof. It will also be seen that the compresser U and the discharger V, are not only disposed or arranged on opposite sides of the pivot, b, but so as to play vertically or at right angles wit-h respect to the mold plate C. Now such an arrangement of the parts is peculiarly advantageous for it enables them to be put in operation by a small amount and compact arrangement of machinery such as described, the whole machine being rendered cheap in construction and eflicient in operation and little liable to get out of order.

I do not claim a brick press composed of a revoluble molding cylinder or prism (having molds placed in its perimeter or cylin dric surface) a mechanism for supplying or filling clay into the molds, a pressing mechanism, a discharging mechanism, and a mechanism for imparting to the mold liong cylinder an intermittent rotary motion,

What I do claim is- The rotary matrices, a, a, and the plate, C, in which they are formed, hopper, K, filling plunger, L, compresser, U, bed or mold plate, B, and discharger, V, arranged in relation to, and in combination with each other so as to be operated by mechanism as above described.

In testimony whereof I have hereunto set my signature this fifteenth day of May 1856.

JOHN BOYNTON.

Witnesses:

RpH. EDDY, F. P. HALE, Jr. 

